Update Project Gantt Chart view

[gdk-max]

Various updates to the code and the requirements

Q	A
Bug fix?	no
New sample?	no
Related issues?	No related issues

First of all, it is cleaner. The bar is no longer changing colours depending on the state of the task. It is just blue or lightblue, using the same shades of blue as Project for the web. And for the rest, this new version now supports/includes:

• Milestones
• Progressbar
• Clicks to update the progress
• Task description
• Task assignment
• Labels that move from right to left based on the amount of space.

Thanks for your contribution! Sharing is caring.

[tecchan1107]

So Amazing!!!!!! Thank you very much🤩🤩✨

[tecchan1107]

fixed #296